Device for cooling a metal during castings

Abstract

The cooling device comprises a supply chamber disposed around a vertical duct and having a front wall which at a spacing intimately follows the shape of the vertical duct, and an evacuation chamber disposed around the supply chamber and separated therefrom by an intermediate wall. The front wall is formed with a number of passages extending towards the vertical duct. Some of these passages open into the supply chamber and the remainder of the passages are connected to tubes which extend through the supply chamber and the intermediate wall and open into the evacuation chamber. The supply chamber comprises means for supplying cooling liquid, and the evacuation chamber comprises means for evacuating cooling liquid.

We claim: 
     
       1. In a continuous casting assembly of the type including a dispenser and a mold, a device intermediate said dispenser and mold for cooling a metal during casting having a vertical duct and means for distributing metal over the inner surface of the vertical duct and disposed substantially at the inlet thereof, the improvement comprising a supply chamber disposed around the vertical duct and having a front wall which at a spacing intimately follows the shape of the vertical duct, an evacuation chamber disposed around the supply chamber, an intermediate wall separating the evacuation chamber from the supply chamber, a rear wall surrounding the evacuation chamber, the front wall having a plurality of first and second passages therethrough, said first and second passages each including passages disposed in a plurality of locations spaced about said duct as well as a plurality of locations spaced along said duct intermediate the opposite ends thereof, said first passages each having an end opening toward the vertical duct, and another end opening into the supply chamber, said second passages each having a tube connected to one end thereof,the tubes extending through the supply chamber and the intermediate wall and opening into the evacuation chambers, means for supplying cooling liquid to the supply chamber, and means for evacuating the cooling liquid from the evacuation chamber. 
     
     
       2. The cooling device of claim 1, wherein the first and second passages in the front wall of the supply chamber open into the spacing between the front wall and the vertical duct in a direction perpendicular to the inner surface of the vertical duct. 
     
     
       3. The cooling device of claim 1 wherein said passages are uniformly distributed in the front wall. 
     
     
       4. In a continuous casting assembly of the type including a dispenser and a mold, a device intermediate said dispenser and mold for cooling a metal during casting having a vertical duct and means for distributing metal over the inner surface of the vertical duct and disposed substantially at the inlet thereof, the improvement comprising a supply chamber disposed around the vertical duct and having a front wall which at a spacing intimately follows the shape of the vertical duct, an evacuation chamber disposed around the supply chamber, an intermediate wall separating the evacuation chamber from the supply chamber, a rear wall surrounding the evacuation chamber, the front wall having a plurality of first and second passages directed towards the vertical duct, the first passages opening into the supply chamber, tubes connected to the second passages, the tubes extending through the supply chamber and the intermediate wall and opening into the evacuation chambers, means for supplying cooling liquid to the supply chamber, means for evacuating the cooling liquid from the evacuation chamber, the means for supplying cooling liquid comprising a distribution chamber disposed around the vertical duct and communicating with the supply chamber via channels distributed around the vertical duct, said supply chamber and said distribution chamber having at least one common wall portion and said channels being formed in the common wall portion.